return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for PF2 (Phosphorus difluoride)

using model chemistry: HF/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/6-31G**
 hartrees
Energy at 0K-539.622638
Energy at 298.15K 
HF Energy-539.622638
Nuclear repulsion energy108.332848
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at HF/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 940 849 144.54 5.04 0.37 0.54
2 A1 384 346 14.69 0.58 0.65 0.79
3 B2 931 841 191.78 4.49 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1127.6 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 1017.8 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at HF/6-31G**
ABC
0.92301 0.31072 0.23246

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.564
F2 0.000 1.195 -0.470
F3 0.000 -1.195 -0.470

Atom - Atom Distances (Å)
  P1 F2 F3
P11.58061.5806
F21.58062.3898
F31.58062.3898

picture of Phosphorus difluoride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 P1 F3 98.228
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.911      
2 F -0.456      
3 F -0.456      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.492 1.492
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.424 0.000 0.000
y 0.000 -23.804 0.000
z 0.000 0.000 -21.999
Traceless
 xyz
x 1.477 0.000 0.000
y 0.000 -2.093 0.000
z 0.000 0.000 0.616
Polar
3z2-r21.231
x2-y22.380
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.496 0.000 0.000
y 0.000 2.871 0.000
z 0.000 0.000 2.331


<r2> (average value of r2) Å2
<r2> 48.455
(<r2>)1/2 6.961